J. Phys. IV France 05 (1995) C8-421-C8-426
Influence of Alfa' Martensite on Shape Memory in Fe-Mn-Based AlloysY. Tomota and K. Yamaguchi
Department of Materials Science, Faculty of Engineering, Ibaraki University, 4-12-1 Nakanarusawa-cho, Hitachi 316, Japan
An Fe-16Mn-6Si alloy exhibits a good one-way and a little two-way shape memories by the stress induced γ→ε martensitic transformation and its reversion on heating and cyclic thermal γ←→εtransformations, respectively. An intrusion of small amount of α'martensite at the initial shape change is not found to deteriorate the one-way memory and rather enhance the two-way memory. The two Fe-Mn-C alloys are also examined and their inferior shape memory is considered not due to the influence of α' martensite.
© EDP Sciences 1995